Korpa 
Neutrik, new Professional Ø 6.3 mm Mono jack plug. Black chrome plated.
Neutrik, new Professional Ø 6.3 mm Mono jack plug, nickel contacts, extra slim design (shell with a width of 14.5 mm) for best handling convenience. Precision machined one-piece contacts, improved chuck type strain relief for reliable cable retention. Black chrome plated and silver contacts.